1 lemon costs 20p and 1 orange costs 45p so an orange costs 25p more
2,7) is the answer to this question
Negative 10 and positive 10
This is a direct variation, since the cost and the number of articles purchases both go up.
Y - 9 = -8(x + 4)
y - 9 = -8x - 32
y = -8x - 23
